General Electric Company

Plug Power Inc.

Robert Dean

Navjot Singh

Devesh Mathur

Alan L Tate

Jodi Boffard

Norberto Silvi

Mark Howard Giammattei

John William Carbone

John P Banevicius

Anton Scholten

Mihail M Penev

Kenneth M Rush, Jr

Norm Peschke

Stephen Dong

Gerardo Rocha Galicia

Thomas D Prevish

High levels of treated fumed silica, processing fluid and high molecular weight silicone polymer are continuously compounded into a homogeneous silica filled heat-vulcanizable silicone composition by forming a premix in a continuous annular layer mixer and continuously discharging the premix into a compounding apparatus for compounding to form the filled heat-vulcanizable silicone composition.

Continuous annular layer mixer

Continuous preparation of heat-vulcanizable silicone compositions

Filler, processing fluid and silicone polymer are controllably compounded into homogeneous filled heat cured rubber compositions with requisite reinforcing properties and levels of volatiles. In the process, a continuous feed of a silicone polymer to a compounding apparatus is monitored and a signal is generated in accordance with the monitored rate of feed. Rate of feed of filler and additives to the compounding apparatus are then adjusted in accordance with the signal.

Compounding heat cured rubber compositions

High levels of inorganic filler, processing fluid and silicone polymer are compounded and devolatilized into homogeneous filled compositions with requisite reinforcing properties and levels of volatiles. In the method, a filler, processing fluid and silicone polymer are mixed in a first compounding apparatus to produce a dispersed composition containing volatiles. The dispersed composition is then compounded in a long extruder having an L/D ratio of greater than 50 to devolatilize the dispersed composition.

Compounding filled silicone compositions

A fuel cell system includes a fuel cell stack, which during operation generates electrical energy by reacting a first stream of reactant gas and a second stream of reactant gas. The fuel cell stack also produces a fuel cell exhaust stream. An oxidizer unit is positioned to receive the fuel cell exhaust stream and oxidize at least a part of the fuel cell exhaust stream during operation, to produce an oxidizer exhaust stream. A heat recovery system is positioned to receive the oxidizer exhaust stream. The heat recovery system transfers at least some heat from the oxidizer exhaust stream to an input stream to generate a heated stream of water. In some embodiments, a temperature sensor is positioned to sense the temperature of the heated input stream. A control system maintains the heated stream of water at a target temperature based on the sensed temperature by controlling the amount of the heat from the oxidizer exhaust stream that is transferred to the input stream.

Recovering heat from fuel cell exhaust

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Rexford, NY, United States of America

Robert Dean